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The level of CO2 in blood (as H2CO3) can be determined by accurately measuring the pH and then titrating the amount of bicarbonate. Calculate the molar concentration of CO2 for a sample that has a pH of 6.220 and a HCO -3 concentration of 0.0020 M. For carbonic acid
pKa1=6.33 and pKa2=10.35.

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